Quote:
Originally Posted by DannoXYZ
Don't even think about JB-Weld! That stuff has caused more crappy repairs on cars & motos than anything else. IT WILL NOT WORK BECAUSE THAT CRAP IS NOT PETROL PROOF!!!
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You need the "Marine Weld" product from JB, it is fuel resistant and will do a perfect job on the tank.
Get a cheap syringe and try any layer some inside the thread hole 6-8mm deep, let it dry hard. Then syringe some more in to a depth of around 5mm. Before it drys make sure you have depth for the screw and run it in to its normal depth to push the Marine Weld back. Then run marine weld around all four sides of the raised bracket sealing it completely. Run a wet finger around to make it neat and smooth.
Job done - I did the very same thing and punctured my tank a few days ago. JB Weld Marine Weld does a brilliant job.